There are a lot of things to remember when packing for a trip, and even after double- or triple-checking that you have everything you need, it is not uncommon to realize — when it is already too late — that a few items that should have made into your carry-on got left behind. Sure, your passport, wallet, and cellphone are essential to a smooth and stress-free travel experience, but these aren't the only things that should be on the top of your "must-bring" list. While in transit, anything and everything can happen — from delayed airplanes to sudden stomach aches — so it's smart to pack a few extra items in your suitcase or backpack.

Creating a little "care package" of 10 common, but often overlooked, items can be surprisingly helpful when tackling unwanted obstacles and unforeseen situations while in transit. While most of these items might seem obvious in hindsight, remembering to pack a travel-sized bottle of hand sanitizer and that pack of Emergen-C often isn't easy when your mind is busy making travel plans, picking the right kind of clothes to pack, or trying to figure out what restaurant to dine at when you reach your destination.

With our list of 10 essential items for healthy travel, you can feel more relaxed while traveling, knowing that when that sudden stomach ache hits on the plane, you have a pack of Pepto-Bismol at the ready. And if you're stuck in traffic on your road trip, you can grab that bag of nuts for a healthy snack to keep your hunger at bay just a little longer.

For a stress-free and healthy travel plan, click through our slideshow of 10 items you shouldn’t leave the house without. And remember, if you're planning to travel by air, make sure to also check the webpage of the Transportation Security Administration to be aware of the latest rules and allowances for carry-on items such as liquids and medicines.